.controls {
  display: inline-block;
  margin-top: auto;
  margin-bottom: auto;
}

.controls div {
  display: inline-block;
}

.controls button { 
  font-size: 14px;
  margin-left: 10px;
  margin-right: 50px;
  cursor: pointer;
  border: none;
  background-color: transparent;
}

.controls button:focus {
  outline: none;
}

.controls button:disabled {
  color: #ccc;
  cursor: not-allowed;
}
